Table 7.1. Tree-Ring Dates, Structure 3, Troy's Tower

Tree-Ring Lab Number Species Date Stratum
873 pinyon 845 vv 3
861 pinyon 891 vv 3
867 pinyon 1000 +vv 3
917 pinyon 1022 vv 3
904 pinyon 1037 vv 3
866 pinyon 1043 ++vv 3
916 pinyon 1088 vv 3
869 pinyon 1126 vv 3
868 pinyon 1141 +vv 3
863 pinyon 1163 vv 3
913 pinyon 1183 +vv 3
854 juniper 924 +vv 4
853 pinyon 960 vv 4
858 pinyon 987 vv 4
856 pinyon 1015 vv 4
883 pinyon 1022 vv 4
894 juniper 1065 vv 4
857 pinyon 1083 vv 4
887 pinyon 1172 vv 4
890 juniper 1220 +vv 4
891 pinyon 1237 vv 4
888 pinyon 1238 vv 4
895 pinyon 1240 +vv 4
884 juniper 1262 vv 4
886 pinyon 1265 r 4
881 pinyon 1267 +vv 4
893 juniper 1268 +v 4
885 pinyon 1271 rB 4
889 pinyon 1271 +vv 4

Date symbol:
    B = bark is present.
    r = less than a full section is present, but the outermost ring is continuous around available circumference.
    v = a subjective judgment that, although there is no direct evidence of the true outside on the sample, the date is within a very few years of being a cutting date.
    vv = there is no way of estimating how far the last ring is from the true outside. Many rings may be lost.
    + = one or a few rings may be missing near the outside whose presence or absence cannot be determined because the series does not extend far enough to provide adequate crossdating.
    ++ = a ring count is necessary beyond a certain point in the series because crossdating ceases.